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8280008840 = 2351271629923
BaseRepresentation
bin1111011011000011…
…01110100010001000
3210101001022000211002
413231201232202020
5113424140240330
63445341154132
7412120625315
oct75541564210
923331260732
108280008840
113569938214
121730b5b948
13a1c56181c
14587955d0c
15336daae45
hex1ed86e888

8280008840 has 32 divisors (see below), whose sum is σ = 18776724480. Its totient is φ = 3285922752.

The previous prime is 8280008839. The next prime is 8280008857. The reversal of 8280008840 is 488000828.

It is a junction number, because it is equal to n+sod(n) for n = 8280008794 and 8280008803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809882 + ... + 820041.

It is an arithmetic number, because the mean of its divisors is an integer number (586772640).

Almost surely, 28280008840 is an apocalyptic number.

It is an amenable number.

8280008840 is an abundant number, since it is smaller than the sum of its proper divisors (10496715640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8280008840 is a wasteful number, since it uses less digits than its factorization.

8280008840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630061 (or 1630057 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 38.

The square root of 8280008840 is about 90994.5539029672. The cubic root of 8280008840 is about 2023.0670038626.

The spelling of 8280008840 in words is "eight billion, two hundred eighty million, eight thousand, eight hundred forty".

Divisors: 1 2 4 5 8 10 20 40 127 254 508 635 1016 1270 2540 5080 1629923 3259846 6519692 8149615 13039384 16299230 32598460 65196920 207000221 414000442 828000884 1035001105 1656001768 2070002210 4140004420 8280008840